Superphosphate-chamber.



1H. P. c. PRBUDBNTHAL.

l. SUPEBPHOSPHATB CHAMBER.

'APPLICMION FILED JAN. 9, 1911.

Patented Sept. 3,'-192- a SETS-SHEET 2,

'H. P. C. FRBUDBNTHAL.

SUPERPHOSPHATE CHAMBER. APPLIoAfrIoN HLBD 111m, 1911.`

- Patented Sept. 3, 1912.

-3 SHEETS-SHEET 3.

)mM/@455.11mmaid HEINRICH :PETER CHRISTOPH FREUDENTHAL, OF HAMBURG, GERMANY.

snPERrHosPHATE-CHAMBER.

' Specification of Letters Patent,

Application led January 9, 191-1.

Patented Sept. 3, 19t?.

Serial No. 601,554. f

To all whom Il may concern:

Be it known that I, HEINRICH PETER CI-IRIsToifi FREUDENTHAL, a subject of the German Emperor, and resident of Hamburg, Germany, have invented certain new and useful Improvements in and Relating to Superphosphate-Chambers, of which the following is a specification. 4

The present invention refers to improvements` in and relating to superphosphate `chambers. i L The discharging of superphosphate chambers is effected at present almost exclusively by mechanical means. For-this purposethe chambers khave been constructed variously in the torna of horizontal or vertical vessels, and' a reducing device, for example, a scrap'- ing tool has beenemployed to act upon thel front, top or bottom of the mass or block `of material so as to cause the superphosphate to pass out of the chamber in the condition ofvfine powder. These' phosphate chambers have 'been'arranged hithertowith the disintegrating vessel above the chamber, and the phosphatemixed in the latter with sulfuric' acid and water passes after the reaction .is completed, in a pastyicondition into the chamber below wherein the mixture 'solidifies The reducing apparatus is arranged in front of,below, or above the chamber to be discharged according to the construction of the latter. In all constructions `however the arrangement is always such that the disintegrating vessel, the superphosphate chamber and the reducing and .discharging device constitute always a connected whole, so that in the case of a number of chambers each chamber must have its own disintegrating vessel and its own reducing and discharging device.k Consequently each chamber must be charged', left till its contents have become solidied, and then be discharged before it can becharged anew.

Now `according to the present invention a group of'superphosphate chambers can be served by lone common disintegrating vessel and one common reducing and' discharging device in such a manner that while one chamber is being charged, another chamber can be discharged, while the contents ofthe intermediate chambers are solidifying. This advantage is attained by arranging the superphosphate chambers o n a turntable, symmetrically to its center, in such a man- 4ner that 'as the turntable rotates, the chargl. 4 `ing openings of the chambers can all travel Vof a screw that rises as it revolves.

all the chambers in turn, and so that while the charging opening of one chamber is situated underneath the said spout, another, chamber `1s situatedl opposite the-common re-l duclng and discharging device by which its contents are being removed, and meanwhile the contents of the intermediate chambers 'are belng allowed to solidify.

This invention 'is Vparticularly suitable for vertical cylindrical phosphate chambers which are discharged from below by means of cuttersimounted in well known manner radially on a revolving axle having the form One adaptation of this invention to such chambers is illust-rated by way of example in the accompanying drawings in which :e-

Figure l is a plan partly in section, and Fig.` 2 is a sectional elevation according to the line A-B of Fig. 1 of a group of four chambers. Fig. 3 is a sectional elevation according to the line 'C-D of Fig. 4, and Fig. 4 is a plan of an entire installation drawn to a smaller' scale. The turntable consists of two j-shaped wrought iron gi'rder's l, 1 connected together by cross girders 3, 3, 4, 4 and 5, 5. Riveted thereto are two pairs of girders 6, G and 7, 7 which are likewise connected together at their front ends by cross girders 5, 5.

`Brackets 81 are fixed to the undersidcs'of the girders 5, 5 for supportingthe rollers 8 which run on a circular rail 9. Upon the frame or skeleton formed by the said girders is placed a platform composed of cast iron plates 10. The platform or iron plates 10 have at the placeswhere the four chambers al* are erected circular perforations or openings 10]L o the size of and registering with the lower openings' of the said cham.`

bers. The chambers consist each of a cylindrical casing a1, a2, a3 and at, respectively, of sheet metal having a concrete lining b the internal diameter ofv which slightly increases toward the top. The chambers L1-4 are closed at the top by cast iron lids c having charging necks d with closing flaps e. The centers of the charging necks are all equally distant from the center of the pivot 13 of the turntable. Each lid c carries also a pipe' f. All the'pipes f having their upper ends brought close together equally distant from the center line of the turntahletllig. 3) and opening into the bottom of a tunnel-shaped vessel g having a neck g1 that opens into a pipe 15. The pipes f serve to convey awav the gases and acid vapors liberated from thue- .reaction mixture in the chambers @t1-4, and this arrangement of the Ipipes enables the turntable to be rotated without impeding the conveying away of the gases and vapors.

The circular openings in the bottom plate 'or-.platform 10, are closed during the charging*- of thematerial into the chambers al* byfslides 16 sliding in suitable guide ways 'by means of a detachable pawl lever 20 and -17' Between' the bottom plate 10 and a tube piece v18 attached to the adjoining girdersot the frame and Iadapted to'form, as it is, a continuation of the chamber shaft. The slides- 16 are provided at their lower side with racks 161 with which engagepinions 191 on' a shaft 19.v The slides can be drawn `forward in radial direction withV respect to the platform 10 to uncover the .openings'lOL a fratchet wheel 21 i'ixed on the said shaft 19'. A set of these operating'devices 20,21 must be provided for each'shaft 19 of each chamber. Only one of these sets is shownin Fig. 2.

Y It is assumed that the. disintegratingA vessel is situated in an invariable position above -jthe charging neck l of the chamber al and theturntable is to be rotatedin the direction August 11, 1910, in Liber D 85, page 32. The

' of the. arrow shown in Fig. 4, by means of `a suitable rotating mechanism (Fig.` V1) whichfor example comprises' a horizontal shaft 22'jjvit-h crank-handle it and 'bevel -wheelfe engaging a bevel wheel 7c on a vertical shaft carrying on itslower end a pinion 'n ge'aringwith a stationary ring of teeth ing for example such as described in thel prior application of J. F. C. M. Trobs, Ser. .No..76752, filed Aug. 11th, 1910, and assigned to me by' deed of assignment recorded screw spindle 2a carries-at its upper end l radial cutters 25 with arms composed of two parts connected elastically together so that the outer arms have a constant tendency to be forced outward,"as fully explained by the said prior application. lin its lowest position the screw lspindle which is guided yin a socket p provided in the wall of the hopper or funnel 26 underneath the chamber to be emptied, extends or is sunk in a tube ,l situated in direction underneath the.

-screw spindle, whereas the cutters 25 are insiderthe upper cylindrical portion of the funnel 2G, Fig. 3. When a chamber to be discharged for example the chamber at' is4 situ-ated over the Jfunnel 26, the slide 16 un der this chamber is drawn'out or opened by means of the corresponding pawl and ratchet mechanism, and the l driving mechanism is started to move the screw spindle 24 upward. .f

The screw spindle then rises with its cutters whichirst' enter the annular-part 18*- the funnel 26 and the interior ofthe overlying phosphate chamberwin which the cutftorming the continuation of .the chamberyshaftas already above explained. This part ters finally enter, and attack the block ofA phosphate situated over them. The phosphate which is removed from the block by the cutters in the form of powder falls into the funnel 26 which allows the superphosphate to fall into a pit q from which it is removed by a conveyer 2'?.- Y

Thecutte'rs 25 are guided vby Arollers l28 which bear against the inside wallv of the yphosphate chamber or ring `18.v lWhen the. chamber has been lemptied the driving mechanism ot the screw spindle 24 is caused to rotate in the opposite direction and atal higher speed until the` cutters-have returned within the upper cylindrical part of the tunnel 26. The turntable can now be turned through 90 degrees after'the slide 16 of the chamber a4 has been closed again, so that 'thenow empty chamber@4 will come into the position previously occupied .by the chamber afl (Fig. 4).' At the same time the chamber a1 which has occupied this position until now, and has been" charged in the meantime, comes into the previous position of the chamber a2, while the .chamber a2 comes in the position of the chamber a land the chamber a3 comes over the reducing and discharging device. The contents of the chambers have suffiiiicient time t'osolidify while these chambers vtravel in steps from.

ble also to cylindrical phosphate chambers having their longitudinal axes horizontal,

`in which the cutters revolve in vertical planes against-the .front end of the block s,

of phosphate lcontained lin the chamber.

An arrangement in which the phosphate were arranged to run, say', .on wheelson straight rail track lto-and-fro"*between a.

charging 'place and a4 'dis'chargi'ng place,

would not give the advantages possessed byan apparatus according tothe present invention, "because points- (switches) and turntables would be necessary in suchan'arrangementjwhich would-:occupy a 'greatldeal- A group of chambers arranged according to the present invention occupies a comparl. atively very small space and can beoperated lby one or at mo st two Workmen.

I claim l. In superphosphate chambers, the commeans for placing each of said chambersv into alinement with the charging'ancl dis-v charging means,respect'ively, and slides for opening said chambers at their bottoms.

2. Insuperphosphate chambers, the combination of several superphosphate cham' bers, a turntable carrying said chambers,

means `for rota-tingsaid turntable, means for charging` and discharging said chambers, means for placing eachl of lsaid chambers in alinement with the charging and discharging means, respectively, slides for opening said chambers at their bottoms, and a cutting device in connection With the dischar ing means, saidcutting device adapted to be rotated and to be raised into the chamber which is in alinement withl the discharging means.

3. In superphosphate chambers, the combination of several superphosphate cham-A bers, a turntable carrying the chambers, means .for rotating said turntable, means for charging 'and discharging said chambers, and4 means for placing each of said chambers into alinement with .the charging and discharging means, respectively, said chambers having outlet pipes for vapor,

the ends of Which are arranged in a circle .near the axisotV the turntable, and a common exhaust pipe into whichsaid ends open.v HEINRICH rr'rra CHRISTOPH FREUDENTHAL. lVitnesses:

MAX F. A. KUnMrrr, MAX A. G. LEMCKE.' 

